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How much of an 800-gram sample of potassium-40 will remain after 3.9109 years of radioactive decay?
Wiki User
∙ 9y ago
100 grams
Wiki User
∙ 9y ago
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How much of an 800-gram sample of potassium-40 will remain after 3.9 X 109 years of radioactive decay?
100 grams
How much energy is released if a sample loses 0.015 kg mass through radioactive decay?
1..35 x 10^15
How does a sample of radioactive waste decay to a nonhazardous level?
All radioactive material has a characteristic half-life. This is a period during which half the matter from the original mass will have decayed into a daughter element. Either the daughter element is non-radioactive and therefore non-hazardous or it is radioactive and has its own half-life. The total radioactivity thus reduces over time and at some stage is deemed to reach a non-hazardous level.
What is the half life of a radioactive isotope if it takes 6.2 days for a 72 gram sample to decay to 18grams?
18 grams are one fourth of the original sample mass of 72 grams. Accordingly, the half life is 6.2/4 = 1.55 days.
What Dubstep tune has the sample from Chopper in it?
The one that has a sample of chopper in it.
After three half-lives what fraction of a radioactive sample will remain?
Approx 1/8 will remain.
How much cesium would remain from a 10g sample after 4 years?
I suppose that you think to the radioactive isotope Cs-17; After 4 years remain 9,122 g.
How much of an 800-gram sample of potassium-40 will remain after 3.9 X 109 years of radioactive decay?
100 grams
What happens to a radioactive material over time?
It disintegrates into its daughter nuclei that are much more stabler than the radioactive nuclei. If a sample of radioacictive material is left it will decay into another element over a period of time. Note that complete decay is not possible. A fraction of the original radioactive material will always remain in the sample.
What must be true for radioactive dating to be possible with a certain sample?
The sample must contain radioactive elements.
The half-life of actinium 227 is 21.772 years After 50 years how much of a 1500 g sample will remain radioactive?
Approx. 313 grams
What does the half life of a radioisotope correspond to?
The length of time required for half of a sample of radioactive material to decay
What is the significance of a half life of a radioisotope?
It tells what fraction of a radioactive sample remains after a certain length of time.
The original sample of a radioactive substance?
Yes, and the question is ... ?
The time it takes for half of the radioactive atoms in a sample of a radioactive element to decay is the element's?
i got no idea
What fraction of a radioactive sample remains after three half-lives?
Not sure what you mean by "had-lives". After 3 half lives, approx 1/8 would remain.
After 6 half-lives What percentage of a radioactive sample remain?
After 6 half lives, the remaining will be (1/2)6 i.e 1/64 th of the initial amount. Hence by percentage it would be 1.5625 %
